Steps for new aircraft creation

[gitgkk]

Dear Ladies & Gentlemen,
I'm designing a new VTOL aircraft. It has 8 VTOL motors and one tail motor as pusher.
I have seen pixhawk airframe references and defined my own file but don't know how to go beyond that. I found that configuration needs to be modified in the code.
What steps are to be followed to define one using pixhawk firmware. Are there scripts which can do that job for me? What system of units does pixhawk follow SI or Metric (for distance, angle etc.)?

Thanks for your responses.
Kashyap

[hamishwillee]

See: http://dev.px4.io/master/en/airframes/adding_a_new_frame.html

Closing, as discussion is more appropriate to https://discuss.px4.io/